This country was supportive of the United States after the September 11, 2001, terrorist attack

Russia

Explanation:

Right after 9/11, Russia and US relations greatly improve and changed for the better- so i would assume the answer is Russia

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.

billygate was not one of the scandals